Concrete slab



l,637,2 July 26, 1927. F. D. COPPOCK l5 CONCRETE SLAB med Nov. 2s, m26-l 2 7 I+ as 2, n .9

IN VEN TOR.

F-hr Ck D Coppack.

` BY A v ATTQRNEY.

Patented July 26, 1927.

UNITED STATES FREDERICK D. COPPOCK, F GEEENVILLE, OHIO.

CONCRETE SLAB.

Application led November 23, 1928. SeriaLNo. 150,269.

This invention relates to an armored reinforced concrete slab designed primarily for use in connection with railway crossings but it is to be understood that a slab, in l accordance with this invention, can be employed for any purposes for which it is found applicable, and the invention has for its object to rovide, in a manner as hereinafter referred to, a slab of the class referred l0 to whereby the reinforcements thereof, in-

cludes means for anchoring them to the armor for the concrete body of the slah.

A further -object of the invention is to provide in a manner as hereinafter set forth, a slab of the class referred to including a metallic armor for the concrete body of the slab and further including reinforcing bars for the concrete body and with the bars and armor having coacting means to facilitate the positioning of the reinforcing bars and further for maintaining them in the position in which they are' placed.

Further objects of the invention are to provide an armored, reinforced concrete slab in a manner-as hereinafter referred to which is simple in its construction and arrangement, strong, durable, of standard form, having armored sides and ends, conveniently stacked when desired, expeditiously handled, thoroughly efficient in its use, and inexpensive to manufacture.

With the foregoing and other objects in view, the invent-ion consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described, and illustrated in the accompanying drawings, wherein is -shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which fall within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views Figure 1 isa top plan view of an armored reinforced concrete slab in accordance with this invention.

Figure 2 is a longitudinal sectional view thereof. y

Figure 3 is a transverse sectional' view thereof.

Figure 4 is a fragmentary view, in section illustrating the manner of connecting an end of a reinforcing bar to the armor.

. The pairs of slits are Figure 5 is a fragmentary view, in section, 65 illustrating the coacting elements between the armor and reinforcing bar for connecting the bar to the armor. A slab, in accordance with this invention, can be of any suitable contour, but preferably is rectangular. The armor corresponds 1n shape to the concrete body of the slab, is constructed of metallic materia-l and can be set up in the form of a unitary frame, but preferably is inthe form of a frame formed of a pair of superposed like sections. The armor is referred to generally by the reference character 1 and consists of two superg posed ylike sections 2, 3. Each section consists of side walls 4, 5 and a pair of end walls 6, 7. The body portion of the slab consists of concrete and which is indicated at 8 and said* body portion 8 is flush with the top and bottom edges of the armor 1. If the armor 1 is formed of two superposed sections the top of the body portion 8 is flush with the to edge of the upper section and further iius with the bottom edge of the lower section. Each end wall of each of the sections of the armor 1 is formed vwith a plurality of pairs of slits. The pairs of slits are ar' ranged in spaced relation and also in alinement with respect to the length of the wall. ositioned a greater distance from the top edge of a section than from the bottom edge thereof. By way of example each end Wall of asection is set up with two pairs of slits and the material freed by each pair of slits is thrust inwardly with respect to the wall to provide a holder or coupling piece 9. Each coupling ieee 9 is substantially V-shaped in plan an projects a sufficient distance from the inner face of the wall to form anopenin 10 for a pur- 95, pose to be presently referre to. Each side wall of a section of the armor is slitted in the same manner as an end wall, but the number of pairs of slits in each side wall is greater than the number of pairs of slits in each end wall. The material freed by the slits formed in each side wall is forced inwardly to provide a holder or coupling piece 11 and which forms an opening 12. for a purpose to be presently referred to. The slab further includes longitudinally and transversely extending reinforcing bars andthe longitudinally extending reinforcing bars are arranged above the transversely extending reinforcing bars. The longitudinally extending reinforcing bars are indicated at 18 and the transversely extending reinforcing bar at 14. Each of the longitudinally extending bars 13 is provided w 1th a pair of depending terminal portions 15 adapted to extend into the openings 10 formed by the holders or coupling pieces 9 carried by the rod Walls ofthe armor 1. Each of the reinforcing bars 13 extend from the coupling pieces formed .t one end wall of the coupling pieces formed on the other end wall of thearmor 1.* Each of the transversely extending reinforcing bars 14 is formed with a pair of depending end terminal portions 16 which extend into the openings 12 formed by the holders or coupling pieces 11 carried by the side walls of the armor l. The transversely extending bars 14 extend from the coupling pieces on one side wall to the coupling pieces on the other side wall of the armor 1. l The holders or coupling pieces provide means for convenientlyv positioning the reinforcing bars and further for connecting said bars to the sides and ends of the armor 1 at the inner face thereof. The reinforcing bars are so arranged within the armor as to be completely embedded in the body portion 8 when the latter is poured into the armor or in other words the reinforcing bars` are arranged within the body portion 8 inwardly with respect to the upper and lower fa ces thereof.

Both faces of the slab are uniform so that the latter can be reversed or set upon either face,` this arrangement also applies to the sides and ends of the slab. The body portion 8 is constructed of suitable plastic material such as cement or concrete and is poured into the armor and envelops the reinforcing rods and is of such quantity as to be flush with 'the top and bottom edge of the armor.

A slab constructed in laccordance with this invention is unusually strong and durable, conveniently handled and has uniform sides, endsl and top and bottom, and further having its length reinforced through the medium of the transverse and longitudinally extending bars., therefore it is thought the many advantages ot an armored reinforced concrete slab in accordance with this invention' can be readily understood, and although the prederstood that changes in the details of construction can be lhad which will -fall within the scope of the invention as claimed.

What is claimed is:

1. A slab com rising a metzrllic armor in the form of a ame having the sides and ends thereof provided with spaced pairs of super-posed slits and with the material freed by each pair of slits extended inwardly to provide a coupling piece, reinforcing bars having depending ends positioned between the coupling pieces and the frame whereby the bars are connected in position, said bars arranged within the frame inwardly with respect to the top and bottom edges thereof, andv a non-metallic plastic body surrounded by said fralnei having said bars embedded therein and further flush with thetop and bottom edges of the frame.

Q. A slab comprising a metallic armor in the forni of a polygonal shaped frame having the sides and ends thereof provided with spaced pairs of slits, the. slits of euch pair :inranged in superposed relation and the material freed by each pair of slits extended inwardly to provide a coupling piece, reinforcing bars having dependingr ends positioned between the coupling pieces and the frame whereby the bars are connected in position, said bars extending longitudinally and transversely of the frame and with the transverse bars arranged below the longitudinal bars, said bars positioned within the frame inwardly with respect to the top and bottom edges thereof. and a non-metallic plastic body surrounded by said frame, having said bars embedded therein and further Y flush with the top and bottom edges of the frame.

3. A slab comprising an armor in the form of a frame having the sides and ends thereof provided with spaced pairs of superposed slits, the material freed by each pair of. slits extended i inwardly to provide coupling pieces, `a set of transversely extending and longitudinally extending reinforcing bars ar ranged Within the frame, each of said bars ot U-shaped contour and connected with the frame by said coupling pieces, and a nonmetallic plastic body surrounded by said frame, having said bars embedded therein and further flush with the top and bottom edges of the frame.

In testimony whereof, I affix my signature hereto.

FREDERICK D. COPPGCK. 

